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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Animals which have many estrous periods per year (ex: cow - sow)






2. (switzerland) 2nd in size and milk production - most muscle -






3. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market






4. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated






5. 114 days






6. (male) pushes the testes outward toward the legs for a cool-down off of the body






7. Provide nourishment for the developing sperm






8. (LH) stimulates the Leydig cells to produce testosterone






9. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






10. To remove/separate testicles from animal's body before animal reaches puberty






11. Can survive ~7 days in cow. vast majority <48 hours






12. Not under a timeline - cow can not be sold as steak






13. 24 hours before end of estrus cycle






14. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase






15. 19-23 (21) days






16. Animals which have only one estrous cycle (ex: dog - fox)






17. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.






18. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)






19. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %






20. (FSH) causes egg to mature in females






21. Can survive ~7 days in cow. vast majority <48 hours






22. Microscopic - make sure not sterile - very few bulls are actually tested






23. Duct through penis that carries sperm and urine






24. (switzerland) 2nd in size and milk production - most muscle -






25. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






26. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off






27. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.






28. 45-60 days after breeding; re-breed as required






29. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed






30. Actual heat cycle (period)






31. Way to know everything is alright with the breeding male






32. 2 month growth cycle. stored in the epididymis of the bull






33. (LH) causes female's egg to break (her period)






34. To remove/separate testicles from animal's body before animal reaches puberty






35. % of fat in milk. makes cheeses and ice cream. regulates cost of milk






36. 30-38 hours after estrus cycle begins






37. Help to signal hormone levels which we need both in the brain right next to each other.






38. 114 days






39. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg






40. Animal which has been castrated after puberty






41. 16-20 hours






42. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






43. 30-38 hours after estrus cycle begins






44. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






45. Animals which have many estrous periods per year (ex: cow - sow)






46. 1-3 days






47. Failure to have one testis (gonad) to descend






48. 14-19 (17) days






49. FEED






50. Sperm production